function [JJ] = computerEssentialJACOBIANSVDTRACE(x,F,weights,w,h,outputformat)

n=size(F,2);
sx=size(x,2);
JJ=zeros(n,sx);

if(sum(weights)<eps)
    weights=ones(n,1)/n;
    display('weights were all zero, resetting to one');
end

for i=1:n
    JJ(i,:) =weights(i,1)* computerEssentialJACOBTRACE(F{1,i},x,w,h);
end

if(outputformat==2) % leave errors same size as the number of unknown parameters but sum them up
    D=ones(size(x,2),1)*sum(JJ);
    JJ=D;
    elseif(outputformat==3) % scalar value
    D=sum(JJ);
    JJ=D;
end


end

function [V] = computerEssentialJACOBTRACE(MYF,x,w,h)



sx=size(x,2);
[foc1,foc2,xc,yc,skew] = reformatK(x,w,h);
if(sx==1)
    V=(8*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))*(3*MYF(1,1)*(MYF(2,1)*foc2 + MYF(1,1)*skew)*foc1^2 + (MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + (MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)) - 2*(2*foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + 2*foc1*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + 2*foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + 2*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + 4*MYF(1,1)^2*foc1^3)*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4) + 8*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(3*MYF(1,1)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)) + 8*foc1^3*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 8*foc1*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2) + 8*MYF(1,1)^2*foc1^5*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2) + 8*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2) + 16*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)))/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 - 2*(2*foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + 2*foc1*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + 2*foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + 2*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + 4*MYF(1,1)^2*foc1^3)*(2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2)^2 - ((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 + 4*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2 + 4*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))^2 + 2*foc1^4*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)^2 + 4*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2)/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^3;
elseif(sx==2)
    V=[ (8*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))*(3*MYF(1,1)*(MYF(2,1)*foc2 + MYF(1,1)*skew)*foc1^2 + (MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + (MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)) - 2*(2*foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + 2*foc1*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + 2*foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + 2*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + 4*MYF(1,1)^2*foc1^3)*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4) + 8*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(3*MYF(1,1)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)) + 8*foc1^3*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 8*foc1*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2) + 8*MYF(1,1)^2*foc1^5*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2) + 8*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2) + 16*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)))/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 - 2*(2*foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + 2*foc1*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + 2*foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + 2*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + 4*MYF(1,1)^2*foc1^3)*(2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2)^2 - ((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 + 4*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2 + 4*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))^2 + 2*foc1^4*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)^2 + 4*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2)/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^3, (8*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(MYF(2,1)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3) + MYF(2,1)*xc + MYF(2,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(3,2) + MYF(1,2)*xc + MYF(2,2)*yc)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + (2*MYF(2,2)*foc2 + MYF(1,2)*skew + MYF(2,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)) - 2*(2*(MYF(2,3) + MYF(2,1)*xc + MYF(2,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(3,2) + MYF(1,2)*xc + MYF(2,2)*yc)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(2*MYF(2,2)*foc2 + MYF(1,2)*skew + MYF(2,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + 2*MYF(1,2)*foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew) + 2*MYF(2,1)*foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew))*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4) + 8*(MYF(1,2)*foc1*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2) + MYF(1,2)*xc + MYF(2,2)*yc))*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)) + 4*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)*(2*MYF(2,1)*(MYF(2,1)*foc2 + MYF(1,1)*skew)*foc1^2 + 2*(MYF(2,3) + MYF(2,1)*xc + MYF(2,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(2*MYF(2,2)*foc2 + MYF(1,2)*skew + MYF(2,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)) + 8*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3) + MYF(2,1)*xc + MYF(2,2)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(2*MYF(2,2)*foc2 + MYF(1,2)*skew + MYF(2,1)*skew) + MYF(1,2)*foc1*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*MYF(2,1)*foc1^3) + 4*foc1^4*(2*foc2*MYF(1,2)^2 + 2*MYF(1,1)*skew*MYF(1,2))*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2) + 8*(MYF(3,2) + MYF(1,2)*xc + MYF(2,2)*yc)*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 - 2*(2*(MYF(2,3) + MYF(2,1)*xc + MYF(2,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(3,2) + MYF(1,2)*xc + MYF(2,2)*yc)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(2*MYF(2,2)*foc2 + MYF(1,2)*skew + MYF(2,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + 2*MYF(1,2)*foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew) + 2*MYF(2,1)*foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew))*(2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2)^2 - ((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 + 4*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2 + 4*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))^2 + 2*foc1^4*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)^2 + 4*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2)/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^3];
elseif(sx==3)
    V=[ (8*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))*(3*MYF(1,1)*(MYF(2,1)*foc2 + MYF(1,1)*skew)*foc1^2 + (MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + (MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)) - 2*(2*foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + 2*foc1*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + 2*foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + 2*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + 4*MYF(1,1)^2*foc1^3)*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4) + 8*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(3*MYF(1,1)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)) + 8*foc1^3*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 8*foc1*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2) + 8*MYF(1,1)^2*foc1^5*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2) + 8*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2) + 16*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)))/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 - 2*(2*foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + 2*foc1*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + 2*foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + 2*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + 4*MYF(1,1)^2*foc1^3)*(2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2)^2 - ((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 + 4*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2 + 4*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))^2 + 2*foc1^4*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)^2 + 4*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2)/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^3, (4*(2*MYF(1,1)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + 2*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(MYF(1,3) + MYF(3,1) + 2*MYF(1,1)*xc + MYF(1,2)*yc + MYF(2,1)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc))*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2) - 2*(2*(MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(MYF(1,3) + MYF(3,1) + 2*MYF(1,1)*xc + MYF(1,2)*yc + MYF(2,1)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + 2*MYF(1,1)*foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc) + 2*MYF(1,1)*foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc))*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4) + 8*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(MYF(1,1)*(MYF(2,1)*foc2 + MYF(1,1)*skew)*foc1^2 + (MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(1,3) + MYF(3,1) + 2*MYF(1,1)*xc + MYF(1,2)*yc + MYF(2,1)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + (MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)) + 8*(MYF(1,1)*foc1*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc))*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)) + 8*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + MYF(1,1)^2*foc1^3 + MYF(1,1)*foc1*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(1,3) + MYF(3,1) + 2*MYF(1,1)*xc + MYF(1,2)*yc + MYF(2,1)*yc)) + 8*(MYF(2,1)*foc2 + MYF(1,1)*skew)*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 4*foc1^4*(2*MYF(1,1)*MYF(1,3) + 2*MYF(1,1)^2*xc + 2*MYF(1,1)*MYF(1,2)*yc)*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2))/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 - 2*(2*(MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(MYF(1,3) + MYF(3,1) + 2*MYF(1,1)*xc + MYF(1,2)*yc + MYF(2,1)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + 2*MYF(1,1)*foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc) + 2*MYF(1,1)*foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc))*(2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2)^2 - ((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 + 4*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2 + 4*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))^2 + 2*foc1^4*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)^2 + 4*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2)/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^3, (8*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2 + MYF(2,1)*skew) + MYF(1,2)*foc1*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3) + MYF(3,2) + MYF(1,2)*xc + MYF(2,1)*xc + 2*MYF(2,2)*yc) + MYF(1,1)*MYF(2,1)*foc1^3) - 2*(2*(MYF(2,2)*foc2 + MYF(1,2)*skew)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(2,2)*foc2 + MYF(2,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(MYF(2,3) + MYF(3,2) + MYF(1,2)*xc + MYF(2,1)*xc + 2*MYF(2,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + 2*MYF(1,2)*foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc) + 2*MYF(2,1)*foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc))*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4) + 4*(2*MYF(2,1)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + 2*(MYF(2,2)*foc2 + MYF(2,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(MYF(2,3) + MYF(3,2) + MYF(1,2)*xc + MYF(2,1)*xc + 2*MYF(2,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc))*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2) + 8*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(MYF(2,1)*(MYF(2,1)*foc2 + MYF(1,1)*skew)*foc1^2 + (MYF(2,2)*foc2 + MYF(1,2)*skew)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,3) + MYF(3,2) + MYF(1,2)*xc + MYF(2,1)*xc + 2*MYF(2,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + (MYF(2,2)*foc2 + MYF(2,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)) + 8*(MYF(1,2)*foc1*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + foc1*(MYF(2,2)*foc2 + MYF(1,2)*skew)*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc))*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)) + 8*(MYF(2,2)*foc2 + MYF(1,2)*skew)*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 4*foc1^4*(2*MYF(1,2)*MYF(1,3) + 2*MYF(1,2)^2*yc + 2*MYF(1,1)*MYF(1,2)*xc)*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2))/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 - 2*(2*(MYF(2,2)*foc2 + MYF(1,2)*skew)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(2,2)*foc2 + MYF(2,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(MYF(2,3) + MYF(3,2) + MYF(1,2)*xc + MYF(2,1)*xc + 2*MYF(2,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + 2*MYF(1,2)*foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc) + 2*MYF(2,1)*foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc))*(2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2)^2 - ((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 + 4*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2 + 4*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))^2 + 2*foc1^4*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)^2 + 4*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2)/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^3];
elseif(sx==4)
    V=[ (8*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))*(3*MYF(1,1)*(MYF(2,1)*foc2 + MYF(1,1)*skew)*foc1^2 + (MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + (MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)) - 2*(2*foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + 2*foc1*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + 2*foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + 2*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + 4*MYF(1,1)^2*foc1^3)*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4) + 8*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(3*MYF(1,1)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)) + 8*foc1^3*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 8*foc1*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2) + 8*MYF(1,1)^2*foc1^5*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2) + 8*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2) + 16*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)))/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 - 2*(2*foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + 2*foc1*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + 2*foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + 2*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + 4*MYF(1,1)^2*foc1^3)*(2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2)^2 - ((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 + 4*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2 + 4*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))^2 + 2*foc1^4*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)^2 + 4*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2)/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^3, (8*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(MYF(2,1)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3) + MYF(2,1)*xc + MYF(2,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(3,2) + MYF(1,2)*xc + MYF(2,2)*yc)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + (2*MYF(2,2)*foc2 + MYF(1,2)*skew + MYF(2,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)) - 2*(2*(MYF(2,3) + MYF(2,1)*xc + MYF(2,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(3,2) + MYF(1,2)*xc + MYF(2,2)*yc)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(2*MYF(2,2)*foc2 + MYF(1,2)*skew + MYF(2,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + 2*MYF(1,2)*foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew) + 2*MYF(2,1)*foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew))*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4) + 8*(MYF(1,2)*foc1*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2) + MYF(1,2)*xc + MYF(2,2)*yc))*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)) + 4*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)*(2*MYF(2,1)*(MYF(2,1)*foc2 + MYF(1,1)*skew)*foc1^2 + 2*(MYF(2,3) + MYF(2,1)*xc + MYF(2,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(2*MYF(2,2)*foc2 + MYF(1,2)*skew + MYF(2,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)) + 8*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3) + MYF(2,1)*xc + MYF(2,2)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(2*MYF(2,2)*foc2 + MYF(1,2)*skew + MYF(2,1)*skew) + MYF(1,2)*foc1*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*MYF(2,1)*foc1^3) + 4*foc1^4*(2*foc2*MYF(1,2)^2 + 2*MYF(1,1)*skew*MYF(1,2))*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2) + 8*(MYF(3,2) + MYF(1,2)*xc + MYF(2,2)*yc)*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 - 2*(2*(MYF(2,3) + MYF(2,1)*xc + MYF(2,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(3,2) + MYF(1,2)*xc + MYF(2,2)*yc)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(2*MYF(2,2)*foc2 + MYF(1,2)*skew + MYF(2,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + 2*MYF(1,2)*foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew) + 2*MYF(2,1)*foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew))*(2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2)^2 - ((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 + 4*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2 + 4*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))^2 + 2*foc1^4*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)^2 + 4*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2)/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^3, (4*(2*MYF(1,1)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + 2*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(MYF(1,3) + MYF(3,1) + 2*MYF(1,1)*xc + MYF(1,2)*yc + MYF(2,1)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc))*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2) - 2*(2*(MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(MYF(1,3) + MYF(3,1) + 2*MYF(1,1)*xc + MYF(1,2)*yc + MYF(2,1)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + 2*MYF(1,1)*foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc) + 2*MYF(1,1)*foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc))*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4) + 8*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(MYF(1,1)*(MYF(2,1)*foc2 + MYF(1,1)*skew)*foc1^2 + (MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(1,3) + MYF(3,1) + 2*MYF(1,1)*xc + MYF(1,2)*yc + MYF(2,1)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + (MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)) + 8*(MYF(1,1)*foc1*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc))*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)) + 8*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + MYF(1,1)^2*foc1^3 + MYF(1,1)*foc1*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(1,3) + MYF(3,1) + 2*MYF(1,1)*xc + MYF(1,2)*yc + MYF(2,1)*yc)) + 8*(MYF(2,1)*foc2 + MYF(1,1)*skew)*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 4*foc1^4*(2*MYF(1,1)*MYF(1,3) + 2*MYF(1,1)^2*xc + 2*MYF(1,1)*MYF(1,2)*yc)*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2))/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 - 2*(2*(MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(MYF(1,3) + MYF(3,1) + 2*MYF(1,1)*xc + MYF(1,2)*yc + MYF(2,1)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + 2*MYF(1,1)*foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc) + 2*MYF(1,1)*foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc))*(2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2)^2 - ((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 + 4*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2 + 4*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))^2 + 2*foc1^4*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)^2 + 4*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2)/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^3, (8*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2 + MYF(2,1)*skew) + MYF(1,2)*foc1*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3) + MYF(3,2) + MYF(1,2)*xc + MYF(2,1)*xc + 2*MYF(2,2)*yc) + MYF(1,1)*MYF(2,1)*foc1^3) - 2*(2*(MYF(2,2)*foc2 + MYF(1,2)*skew)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(2,2)*foc2 + MYF(2,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(MYF(2,3) + MYF(3,2) + MYF(1,2)*xc + MYF(2,1)*xc + 2*MYF(2,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + 2*MYF(1,2)*foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc) + 2*MYF(2,1)*foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc))*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4) + 4*(2*MYF(2,1)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + 2*(MYF(2,2)*foc2 + MYF(2,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(MYF(2,3) + MYF(3,2) + MYF(1,2)*xc + MYF(2,1)*xc + 2*MYF(2,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc))*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2) + 8*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(MYF(2,1)*(MYF(2,1)*foc2 + MYF(1,1)*skew)*foc1^2 + (MYF(2,2)*foc2 + MYF(1,2)*skew)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,3) + MYF(3,2) + MYF(1,2)*xc + MYF(2,1)*xc + 2*MYF(2,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + (MYF(2,2)*foc2 + MYF(2,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)) + 8*(MYF(1,2)*foc1*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + foc1*(MYF(2,2)*foc2 + MYF(1,2)*skew)*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc))*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)) + 8*(MYF(2,2)*foc2 + MYF(1,2)*skew)*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 4*foc1^4*(2*MYF(1,2)*MYF(1,3) + 2*MYF(1,2)^2*yc + 2*MYF(1,1)*MYF(1,2)*xc)*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2))/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 - 2*(2*(MYF(2,2)*foc2 + MYF(1,2)*skew)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(2,2)*foc2 + MYF(2,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(MYF(2,3) + MYF(3,2) + MYF(1,2)*xc + MYF(2,1)*xc + 2*MYF(2,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + 2*MYF(1,2)*foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc) + 2*MYF(2,1)*foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc))*(2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2)^2 - ((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 + 4*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2 + 4*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))^2 + 2*foc1^4*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)^2 + 4*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2)/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^3];
elseif(sx==5)
   V=[ (8*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))*(3*MYF(1,1)*(MYF(2,1)*foc2 + MYF(1,1)*skew)*foc1^2 + (MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + (MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)) - 2*(2*foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + 2*foc1*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + 2*foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + 2*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + 4*MYF(1,1)^2*foc1^3)*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4) + 8*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(3*MYF(1,1)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)) + 8*foc1^3*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 8*foc1*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2) + 8*MYF(1,1)^2*foc1^5*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2) + 8*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2) + 16*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)))/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 - 2*(2*foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + 2*foc1*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + 2*foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + 2*foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + 4*MYF(1,1)^2*foc1^3)*(2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2)^2 - ((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 + 4*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2 + 4*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))^2 + 2*foc1^4*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)^2 + 4*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2)/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^3, (4*(2*MYF(1,1)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + 2*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(MYF(1,3) + MYF(3,1) + 2*MYF(1,1)*xc + MYF(1,2)*yc + MYF(2,1)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc))*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2) - 2*(2*(MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(MYF(1,3) + MYF(3,1) + 2*MYF(1,1)*xc + MYF(1,2)*yc + MYF(2,1)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + 2*MYF(1,1)*foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc) + 2*MYF(1,1)*foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc))*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4) + 8*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(MYF(1,1)*(MYF(2,1)*foc2 + MYF(1,1)*skew)*foc1^2 + (MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(1,3) + MYF(3,1) + 2*MYF(1,1)*xc + MYF(1,2)*yc + MYF(2,1)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + (MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)) + 8*(MYF(1,1)*foc1*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + foc1*(MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc))*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)) + 8*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + MYF(1,1)^2*foc1^3 + MYF(1,1)*foc1*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(1,3) + MYF(3,1) + 2*MYF(1,1)*xc + MYF(1,2)*yc + MYF(2,1)*yc)) + 8*(MYF(2,1)*foc2 + MYF(1,1)*skew)*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 4*foc1^4*(2*MYF(1,1)*MYF(1,3) + 2*MYF(1,1)^2*xc + 2*MYF(1,1)*MYF(1,2)*yc)*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2))/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 - 2*(2*(MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(MYF(1,3) + MYF(3,1) + 2*MYF(1,1)*xc + MYF(1,2)*yc + MYF(2,1)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + 2*MYF(1,1)*foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc) + 2*MYF(1,1)*foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc))*(2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2)^2 - ((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 + 4*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2 + 4*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))^2 + 2*foc1^4*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)^2 + 4*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2)/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^3, (8*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2 + MYF(2,1)*skew) + MYF(1,2)*foc1*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3) + MYF(3,2) + MYF(1,2)*xc + MYF(2,1)*xc + 2*MYF(2,2)*yc) + MYF(1,1)*MYF(2,1)*foc1^3) - 2*(2*(MYF(2,2)*foc2 + MYF(1,2)*skew)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(2,2)*foc2 + MYF(2,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(MYF(2,3) + MYF(3,2) + MYF(1,2)*xc + MYF(2,1)*xc + 2*MYF(2,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + 2*MYF(1,2)*foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc) + 2*MYF(2,1)*foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc))*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4) + 4*(2*MYF(2,1)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + 2*(MYF(2,2)*foc2 + MYF(2,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(MYF(2,3) + MYF(3,2) + MYF(1,2)*xc + MYF(2,1)*xc + 2*MYF(2,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc))*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2) + 8*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(MYF(2,1)*(MYF(2,1)*foc2 + MYF(1,1)*skew)*foc1^2 + (MYF(2,2)*foc2 + MYF(1,2)*skew)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,3) + MYF(3,2) + MYF(1,2)*xc + MYF(2,1)*xc + 2*MYF(2,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + (MYF(2,2)*foc2 + MYF(2,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)) + 8*(MYF(1,2)*foc1*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + foc1*(MYF(2,2)*foc2 + MYF(1,2)*skew)*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc))*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)) + 8*(MYF(2,2)*foc2 + MYF(1,2)*skew)*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 4*foc1^4*(2*MYF(1,2)*MYF(1,3) + 2*MYF(1,2)^2*yc + 2*MYF(1,1)*MYF(1,2)*xc)*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2))/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 - 2*(2*(MYF(2,2)*foc2 + MYF(1,2)*skew)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(2,2)*foc2 + MYF(2,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(MYF(2,3) + MYF(3,2) + MYF(1,2)*xc + MYF(2,1)*xc + 2*MYF(2,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + 2*MYF(1,2)*foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc) + 2*MYF(2,1)*foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc))*(2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2)^2 - ((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 + 4*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2 + 4*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))^2 + 2*foc1^4*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)^2 + 4*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2)/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^3, (8*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(MYF(2,1)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3) + MYF(2,1)*xc + MYF(2,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(3,2) + MYF(1,2)*xc + MYF(2,2)*yc)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + (2*MYF(2,2)*foc2 + MYF(1,2)*skew + MYF(2,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)) - 2*(2*(MYF(2,3) + MYF(2,1)*xc + MYF(2,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(3,2) + MYF(1,2)*xc + MYF(2,2)*yc)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(2*MYF(2,2)*foc2 + MYF(1,2)*skew + MYF(2,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + 2*MYF(1,2)*foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew) + 2*MYF(2,1)*foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew))*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4) + 8*(MYF(1,2)*foc1*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2) + MYF(1,2)*xc + MYF(2,2)*yc))*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)) + 4*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)*(2*MYF(2,1)*(MYF(2,1)*foc2 + MYF(1,1)*skew)*foc1^2 + 2*(MYF(2,3) + MYF(2,1)*xc + MYF(2,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(2*MYF(2,2)*foc2 + MYF(1,2)*skew + MYF(2,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)) + 8*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3) + MYF(2,1)*xc + MYF(2,2)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(2*MYF(2,2)*foc2 + MYF(1,2)*skew + MYF(2,1)*skew) + MYF(1,2)*foc1*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*MYF(2,1)*foc1^3) + 4*foc1^4*(2*foc2*MYF(1,2)^2 + 2*MYF(1,1)*skew*MYF(1,2))*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2) + 8*(MYF(3,2) + MYF(1,2)*xc + MYF(2,2)*yc)*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 - 2*(2*(MYF(2,3) + MYF(2,1)*xc + MYF(2,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(3,2) + MYF(1,2)*xc + MYF(2,2)*yc)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*(2*MYF(2,2)*foc2 + MYF(1,2)*skew + MYF(2,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + 2*MYF(1,2)*foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew) + 2*MYF(2,1)*foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew))*(2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2)^2 - ((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 + 4*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2 + 4*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))^2 + 2*foc1^4*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)^2 + 4*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2)/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^3, (8*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))*(MYF(1,1)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + (MYF(1,2)*foc2 + MYF(2,1)*foc2 + 2*MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)) - 2*(2*(MYF(1,2)*foc2 + MYF(2,1)*foc2 + 2*MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + 2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*MYF(1,1)*foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew) + 2*MYF(1,1)*foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew))*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4) + 8*(MYF(1,1)*foc1*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc))*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)) + 4*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)*(2*MYF(1,1)*(MYF(2,1)*foc2 + MYF(1,1)*skew)*foc1^2 + 2*(MYF(1,2)*foc2 + MYF(2,1)*foc2 + 2*MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + 2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)) + 8*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + MYF(1,1)^2*foc1^3 + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(1,2)*foc2 + MYF(2,1)*foc2 + 2*MYF(1,1)*skew) + MYF(1,1)*foc1*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)) + 4*foc1^4*(2*skew*MYF(1,1)^2 + 2*MYF(1,2)*foc2*MYF(1,1))*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2) + 8*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 - 2*(2*(MYF(1,2)*foc2 + MYF(2,1)*foc2 + 2*MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + 2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc) + 2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc) + 2*MYF(1,1)*foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew) + 2*MYF(1,1)*foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew))*(2*(foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2)^2 - ((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^2 + 4*((MYF(2,1)*foc2 + MYF(1,1)*skew)*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)*foc1^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + (MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2 + 4*(foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew) + MYF(1,1)*foc1^3*(MYF(2,1)*foc2 + MYF(1,1)*skew) + foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc))^2 + 2*foc1^4*(MYF(1,1)^2*foc1^2 + MYF(1,1)^2*skew^2 + MYF(1,1)^2*xc^2 + 2*MYF(1,1)*MYF(1,2)*foc2*skew + 2*MYF(1,1)*MYF(1,2)*xc*yc + 2*MYF(1,1)*MYF(1,3)*xc + MYF(1,2)^2*foc2^2 + MYF(1,2)^2*yc^2 + 2*MYF(1,2)*MYF(1,3)*yc + MYF(1,3)^2)^2 + 2*((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2)^2 + 4*(foc1*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)*(MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc) + MYF(1,1)*foc1^3*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc) + foc1*(MYF(1,2)*foc2 + MYF(1,1)*skew)*(MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc))^2)/((MYF(2,2)*foc2^2 + MYF(1,1)*skew^2 + MYF(1,2)*foc2*skew + MYF(2,1)*foc2*skew)^2 + foc1^2*(MYF(1,2)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(2,1)*foc2 + MYF(1,1)*skew)^2 + foc1^2*(MYF(1,3) + MYF(1,1)*xc + MYF(1,2)*yc)^2 + foc1^2*(MYF(3,1) + MYF(1,1)*xc + MYF(2,1)*yc)^2 + (MYF(3,3) + MYF(1,3)*xc + MYF(3,1)*xc + MYF(2,3)*yc + MYF(3,2)*yc + MYF(1,1)*xc^2 + MYF(2,2)*yc^2 + MYF(1,2)*xc*yc + MYF(2,1)*xc*yc)^2 + (MYF(2,3)*foc2 + MYF(1,3)*skew + MYF(2,1)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(1,2)*skew*yc)^2 + (MYF(3,2)*foc2 + MYF(3,1)*skew + MYF(1,2)*foc2*xc + MYF(2,2)*foc2*yc + MYF(1,1)*skew*xc + MYF(2,1)*skew*yc)^2 + MYF(1,1)^2*foc1^4)^3];
else
    error('weitd shape');
end

end
